Arch Linux

TheLedFloyd

Member

Registered: 2007-09-07

Posts: 9

Website

Fans turning on too soon

My fans in my laptop turn on but with my CPU throttling it runs almost at room temperature yet the fans constantly run, is there any easy way to fix this?

Allan

Pacman

From: Brisbane, AU

Registered: 2007-06-09

Posts: 11,439

Website

Re: Fans turning on too soon

Really depends on the type of laptop.  More info please...

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TheLedFloyd

Member

Registered: 2007-09-07

Posts: 9

Website

Re: Fans turning on too soon

Its a Compaq Preserio C571nr Pentium 4 Dual Core, intel integrated graphics

vomix

Member

From: Belgium

Registered: 2007-05-02

Posts: 84

Re: Fans turning on too soon

Hi,

Sorry for this useless post, but I've the same problem on a Packard Bell Ipower 5000 serie 1....! (Pentium 4, SIS645DX,...)
Even with a low usage of CPU, the fan is turning almost every minute.

Thus, I'm also interested in a way to resolve this.

Thanks in advance.

ramjet

Member

Registered: 2005-02-16

Posts: 37

Re: Fans turning on too soon

check if whats speed your cpu is running at with
#cat /proc/cpuinfo
(where is days "cpu MHZ" is what its running at)
If it hasnt scaled down this might explain it.

vomix

Member

From: Belgium

Registered: 2007-05-02

Posts: 84

Re: Fans turning on too soon

processor    : 0
vendor_id    : GenuineIntel
cpu family    : 15
model        : 2
model name    : Intel(R) Pentium(R) 4 CPU 2.40GHz
stepping    : 7
cpu MHz        : 299.992
cache size    : 512 KB
fdiv_bug    : no
hlt_bug        : no
f00f_bug    : no
coma_bug    : no
fpu        : yes
fpu_exception    : yes
cpuid level    : 2
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe up cid
bogomips    : 4785.80
clflush size    : 64

I'm using p4-clockmod and cpufrequtils, with the "ondemand" governor.
I've tried to install lm_sensors, without succes: my hardware doesn't support monitoring.  So I can't know the temp of the different devices.

It's maybe an hardware issue (this is a second hand laptop), but I hope it's not t the case.  Is there any way to know what's wrong?

PS:

- /proc/acpi/fan/ and /proc/acpi/thermal_zone/ are empty.
- thermal and fan modules are loaded

Thanks.

avasfx

Member

Registered: 2007-09-27

Posts: 4

Re: Fans turning on too soon

Hello. I had the same problem, but the decision was simply banal ( in my case): I just cleaned the fan manually, there was a lot of dust there, and now its working great. Now i clean laptop once for a few months. Have a good day.
Alex